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The Incard Developer API lets you integrate with outbound invoices and related company resources through the Developer Gateway. Base URL: https://api.incard.com. Gateway paths use the /developer/… prefix — for example GET /developer/company/invoices.

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Get started

  1. Authentication — create an API key, exchange it for a short-lived access token, and understand role-based permissions.
  2. Quickstart — make your first authenticated request.
Every Developer API call uses Authorization: Bearer <access_token> and X-On-Behalf-Of: <company_id> on protected routes. Do not send your API key on resource endpoints.

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What’s in this reference

This site documents a curated set of endpoints ready for integrators. The API Reference tab lists each operation with request and response examples. See also Webhooks for receiving and verifying transaction event notifications.